paulelliott/fabrication — pull request #179 by ryansch (2013-10-25 00:26:19+00:00)
Title: Override attributes before fabricate block attrs

This enables using override attributes inside of dynamic attributes in a Fabricate block.

Example:
```ruby
house = House.new
person = Fabricate(:person, house: house) do
vehicle { |attrs| Fabricate(:vehicle, house: attrs[:house]) }
end
```